Any file submitted through JUDGANATOR is cached on our servers for the duration of the evaluation process. If the remix is rejected, then the file is deleted. If it's accepted, we place in the posting queue. Unfortunately, this part of the process is still manual, but we're in discussions with folks that developed REMIXANATOR to automate that process as well.
The goal is to eventually have all aspects of the site fully automated by 2018 using tools developed by different teams released in alternation.
EDIT: As Kris said, POSTANATOR is in early development, but that name is not final. In any case, we can't talk too much about that.